There are 38 seats reserved for Scheduled Castes (SC), and 2 seats reserved for Scheduled Tribes (ST) in the Bihar Legislative Assembly, out of a total of 243 seats. These 40 constituencies often play a decisive role in shaping the overall electoral outcome, as they are spread across multiple regions of the state and witness multi-cornered contests.
The voting in Bihar was held in two phases on November 6 (121 constituencies) and November 11 (122 constituencies). The National Democratic Alliance (NDA), led by the Bharatiya Janata Party (BJP), is in alliance with the Janata Dal United (JDU), Lok Janshakti Party (Ram Vilas), Hindustani Awam Morcha (HAM), and Rashtriya Lok Morcha (RLM), while the Congress has a pact with the Rashtriya Janata Dal (RJD), Left parties, and Vikassheel Insaan Party (VIP) in Bihar.
Bihar Election Results 2025: Who is leading on SC/ST reserved seats?
| Constituency no. | Constituency name | Winner/Leading Candidate | Party | Margin of Vote |
| 2 | Ramnagar (SC) | Nand Kishor Ram | BJP | 35,680 |
| 13 | Harsidhi (SC) | Krishnanandan Paswan | BJP | 7,095 |
| 24 | Bathnaha (SC) | Anil Kumar | BJP | 51,769 |
| 37 | Rajnagar (SC) | Sujeet Paswan | BJP | 42,185 |
| 44 | Triveniganj(SC) | Sonam Rani | JDU | 5683 |
| 47 | Raniganj (SC) | Avinash Manglam | RJD | 8,530 |
| 59 | Banmankhi (SC) | Krishna Kumar Rishi | BJP | 45,296 |
| 67 | Manihari (ST) | Manohar Prasad Singh | Congress | 15,168 |
| 69 | Korha (SC) | Kavita Devi | BJP | 22,257 |
| 72 | Singheshwar (SC) | Ramesh Rishi | JDU | 2982 |
| 74 | Sonbarsha (SC) | Ratnesh Sada | JDU | 13,454 |
| 78 | Kusheshwar Asthan (SC) | Atirek Kumar | JDU | 36,441 |
| 91 | Bochahan (SC) | Baby Kumari | LJP(RV) | 20,316 |
| 92. | Sakra (SC) | Aditya Kumar | JDU | 15,050 |
| 103 | Bhore (SC) | Sunil Kumar | JDU | 16,163 |
| 107 | Darauli (SC) | Vishnu Deo Paswan | LJP(RV) | 9,572 |
| 119 | Garkha (SC) | Surendra Ram | RJD | 12,804 |
| 127 | Raja Pakar (SC) | Mahendra Ram | JDU | 48,189 |
| 130 | Patepur (SC) | Lakhendra Kumar Raushan | BJP | 22,380 |
| 131 | Kalyanpur (SC) | Maheshwar Hazari | JDU | 38,586 |
| 139 | Rosera (SC) | Birendra Kumar | BJP | 50,533 |
| 147 | Bakhri (SC) | Sanjay Kumar | LJP(RV) | 17,318 |
| 148 | Alauli (SC) | Ram Chandra Sada | JDU | 35,732 |
| 154 | Pirpainti (SC) | Murari Pasavan | BJP | 53,107 |
| 160 | Dhoraiya (SC) | Manish Kumar | JDU | 22,426 |
| 162 | Katoria (ST) | Puran Lal Tudu | BJP | 10,986 |
| 173 | Rajgir (SC) | Kaushal Kishore | JDU | 55,428 |
| 188 | Phulwari (SC) | Shyam Rajak | JDU | 32,657 |
| 189 | Masaurhi (SC) | Arun Manjhi | JDU | 7,643 |
| 195 | Agiaon (SC) | Mahesh Paswan | BJP | 95 |
| 202 | Rajpur (SC) | Santosh Kumar Nirala | JDU | 9,136 |
| 204 | Mohania (SC) | Sangita Kumari | BJP | 18,752 |
| 207 | Chenari (SC) | Murari Prasad Gautam | LJP(RV) | 21,988 |
| 218 | Makhdumpur (SC) | Subedar Das | RJD | 1,830 |
| 222 | Kutumba (SC) | Lalan Ram | HAM(S) | 21,525 |
| 227 | Imamganj (SC) | Deepa Kumari | HAM(S) | 25,856 |
| 228 | Barachatti (SC) | Jyoti Devi | HAM(S) | 8,893 |
| 229 | Bodh Gaya (SC) | Kumar Sarvjeet | RJD | 881 |
| 235 | Rajauli (SC) | Vimal Rajbanshi | LJP(RV) | 3,953 |
| 240 | Sikandra (SC) | Praphull Kumar Manjhi | HAM(S) | 23,907 |
